The one-battery Fast 301 Tactical Flashlight is the smallest, lightest and powerful single-output Tactical-Light, designed for EDC and hardcore tactical situations. With a simple but reliable one brightness mode only, can reach a maximum of 800 lumens with bright light. Powerful output and extensive runtime enables you to get the job done. 301 model integral thumbscrew clamp can attaches to any M-Lok rail, literally become a part of your guns. Come with extra remote switches.